Sylvania



' H. IMMENDORP '8: A. H. ENGSTRUM.

TANK PUMP GOVERNOR.

PatentedOct. 6,-18'96;

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UNITED STATES PATENT- OFFICE.

GEORGE H. IMMENDORF AND AXEL H. ENGSTROM, OF PHILADELPHIA, PENN-SYLVANIA; SAID ENGSTROM ASSIGNOR TO SAID IMMENDORF.

TAN K-PUM P GOVERNOR.

SPECIFICATION forming part Of Letters Patent N0. 569,134, dated October6, 1896.

Application filed January 20, 1896- Serial No. 576,074. (No model.)

To all whom it may concern:

Be it known that we, GEORGE H. IMMEN- DORF, a citizen of the UnitedStates, and AXEL H. ENGSTROM, a subject of the King of Sweden andNorway, residing at the city of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have in vented certain new anduseful Improvements in Tank- Pump Governors, of which the following is aspecification.

Our invention has relation to an automatic governor for tank-pumps; andin such connection it relates to the construction of such a governor.

The principal objects of our invention are, first, to provide a governorfor tank-pumps, comprising a valve located upon the steamsupply to thepump, which valve is regulated automatically by variations in pressurebetween the normal or predetermined quantity of water to be stored inthe tank and the amount of discharge to the tank, and, second, toprovide in such a governor a valve located on the steam-supply to thepipe, a piston suitably connected to said valve, a cylinder traversed bysaid piston, a stand-pipe leading to one end of said cylinder andadapted to contain water of a height corresponding to the normal orpredetermined height of water required in the tank, and a pipe leadingfrom the tank to the opposite end of said cylinder, whereby the valve isregulated by variations in pressure existing between the normal pressurerequired in the tank and the amount of discharge to the tank.

Our invention, stated in general terms, consists of a governor fortank-pumps constructed and arranged in substantially the mannerhereinafter described and claimed.

The nature and scope of our invention will be more fully understood fromthe following description, taken in connection with the accompanyingdrawing, forming part hereof, illustrating in perspective, partiallysectioned, a governor for tank-pumps embodying features of our inventionand showing the connections of the same with a tank and the steam-chestof a pump.

Referring to the drawing, a represents the steam-chest of the pump, andb the steamsupply pipe entering the same. On the pipe b is located anordinary steam-balanced valve d, the stem d of which extends through thepacking-box (1 To the upper end of the stem d is secured a head orcross-bar d Above thevalve (Z, and supported by a suitable framework 6thereon, is a cylinder f, traversed by a piston f, provided with a stemf extending through the packing-box f in the upper head of the cylinderf. This stem f is provided with a head or cross-bar f*. The ends of thecross-bar d are connected with the ends of the cross-bar f by means ofthe rods g.

It is manifest from the above description that a movement up or down ofthe piston f will, through the rods g, cause a corresponding up-and-downmovement to the stem d and valve cl. The lower end of the cylinder f isconnected with a stand-pipe h of a height determined by the height ofwater required in the water-tank A, supplied by the pump. The pipe Ithas an opening or inlet h at its upper end in communication with thetank A and maintains a constant and uniform pressure of water upon theunder side of the piston f.

The upper end of the cylinder f is connected with the bottom of the tankA by means of a pipe k, which transfers the pressure of water in thetank to that portion of the cylinder f above the piston f. It is obviousthat the piston f is thus under two pressures, one of the water in thestand-pipe h, which is constant and represents the required height orpressure of Water in the tank A, while the other is the pressure ofwater in the tankpipe is, which is variable, depending upon the quantityor pressure of water discharged into the tank from the pump.

Should now the water in the tank A decrease by reason of excessive drainthereon or a decrease inamount pumped therein, the pressure of water inthe stand-pipe it will immediately raise the piston f, and through 5 itsconnections open the valve d, whereupon an increased amount of steam isadmitted to the pump and an increase of water discharged from the pumpis created. If, however, the

tank be filled too rapidly and the water rises above the outlet of thestand-pipe h to an overflow-pipe l, the pressure of water in the pipe70, which then becomes greater than that in the stand-pipe it, willdepress the piston f, thus shutting off the valve cl, decreasing theamount of steam fed to the pump, and hence diminishing the amount ofwater discharged to the tank.

On the stand-pipe h and tank-pipe k are placed, respectively,regulatingvalves h and k by means of which the pressures on the pistonmay be nicely adjusted.

The overflow -pipe Z is connected to the stand-pipe h at a heightcorresponding to that of the water to be maintained in the tank, andshould, by reason of accident, the tank be filled to the outlet h of thepipe h the water will overflow and be conducted off through theoverflow-pipe Z.

Between the pipes 72. and k and above the valves k and 70 is placed thebranch pipe m, connecting the two pipes and provided with a valve m,which controls the communications between the two pipes h and k. WVhenthis valve m is opened, the pressures in the pipes h and it becomeequalized and the valve (1 ceases to be operated automatically.

If required, aweighted lever-arm 0, pivoted to a bracket 0' of thecylinder f and pivotally cylinder and connected with said valve, 3.stand-pipe leading to one end of said cylinder and opening into thetankat its other end at a height above the normal height of water in saidtank, an overflow-pipe connected to said stand-pipe at a heightcorresponding to the normal height of water in the tank, and a pipeconnecting the opposite end of the cylinder with said tank,substantially as and for the purposes described.

2. A governor for tank-pumps, consisting,

of a valve located on the steam-supply to the pump, a cylinder, a pistontraversing said cylinder and suitably connected with said valve, astand-pipe leading to one end of said cylinder and filled with water toa height. corresponding to the height of Water required in the tank, anda pipe connecting the opposite end of the cylinder with the tank,whereby said piston is operated by variations in pressure of the waterin the tank and thereby through its connections regulates the steamsupply to the pump, a branch pipe connecting said stand-pipe andtank-pipe together and a valve controlling said branch pipe and adaptedwhen opened to equalize the pressures in the stand and tank pipes,substantially as and for the purposes described.

In testimony whereof we have hereunto set our signat arcs in thepresence of two subscribing witnesses. Y

GEO. H. IMMENDORF. AXEL I-I. ENGSTROM. lVitnesses:

J. WALTER DOUGLASS, THOMAS M. SMITH.

